Rough idle
08-27-2007, 01:35 AM
#1
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04 c230K
Rough idle
Here's the story. About hours or so ago my "add oil msg came on". So I went to pepboys and got a qwart of 0w40 mobile 1 synthetic oil and added it to my car. Drove around for a while. Came home for a while. Went out for an hour at the driving range. As I was driving home the engine started to idle rough, still had power but when stopped it hunts from 500 to 1000 rpm. What has happened? If I change my oil am I ok or am I going to need to reset something. I have no malfunction msgs. Help
08-27-2007, 08:00 PM
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BMW E30. I've turned to the dark side.
I'm not positive your engine will react this way but you may have the filler cap on incorrecly or loose allowing a vacuum leak from the normally sealed engine. Another possibility is if you made a mess when pouring, you could have filled the #1 spark plug hole up with oil.
